The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 2022
Filed:
Oct. 29, 2020
Corning Incorporated, Corning, NY (US);
George Halsey Beall, Big Flats, NY (US);
John Philip Finkeldey, Elkland, PA (US);
CORNING INCORPORATED, Corning, NY (US);
Abstract
A glass-ceramic article includes 50 mol. % to 80 mol. % SiO; 10 mol. % to 25 mol. % AlO; 5 mol. % to 20 mol. % MgO; 0 mol. % to 10 mol. % LiO; and 1 mol. % to 3 mol. % of a nucleating agent. The nucleating agent is selected from the group consisting of ZrO, TiO, SnO, HfO, TaO, NbO, YO, and combinations thereof. The nucleating agent may comprise greater than or equal to 50% ZrOand less than 50% of at least one compound selected from the group consisting of TiO, SnO, HfO, TaO, NbO, YO, and combinations thereof. The glass-ceramic article may have a molar ratio of MgO to LiO of greater than or equal to 1:1. The glass-ceramic article may satisfy the relationship 0.85≤(MgO (mol %)+LiO (mol %))/AlO(mol %)≤1.2. The glass-ceramic article may comprise a crystalline phase comprising hexagonal stuffed β-quartz and glass.